Mold for casting wheels



(No Model.)

J. WLMQGILL.

2 Sheets-Sheet 1.

MOLD FOR CASTING WHEELS.

, Patented Dec. 21, 1886.

2 Sheets-Sheet 2.

J. W. MOG'ILL.

MOLD FOR GASTING WHEELS.

No. 354,720. Patented D em 21,1886.

IJVV'EWTOR,

J1 ttorney WITNESSES N. PETERS. FhuloLiihogfi-lpher. Washington D C.

NITED STATES P TENT FFICE.

JAMES \VILSON MOGILIJ, OF PEORIA, ILLINOIS.

MOLD FOR CASTING WHEELS.

SPECIPICATIOIF forming part of Letters Patent No. 354-,720, datedDecemberzl, 1886.

Application filed August 18, 1886.

To all whom it may conoerni v Be it known that I, JAMES WILsoN IVIOGILL,a citizen of the United States, and a resident of Peoria, in the countyof Peoria and State of Illinois, have invented certain new and usefulImprovements in Molds for Casting Metals; and I do hereby declare thatthe following is a full clear, and exact description of the in vention,which will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,which form a part of this specification, and in which- Figure 1 is aperspective view of the, rimmold partly set up, a part of the lowercasing being broken away. Fig. 2 is a 'plan of the lower link-section.Fig. 3 is a perspective view of the lower brace-ring. Fig. 4 shows alongitudinal and a transverse section of one of the double wedges. Fig.5 is a perspective view showing the two separate parts which combine toform the wedge-links. Fig. 6 is a perspective view of one of theclamping-rods with its wedge. Fig. 7 is a similar view of one of thechain-tightening rods. Fig. 8 is a perspeotiveview of the gate for therim-mold with its securing-wedge. Fig. 9 is a vertical crosssectionof'the rim-mold when set up and filled. Fig. 10 is a perspective view ofthe hub-mold when set up, the wheel or pulley rim with its cast-inspokes being shown in dotted lines; and Fig. 11 is a vertical sectionthrough said mold, showing the construction of the gate and theattachment of the core.

Like letters of reference indicate corresponding parts throughout theseveral figures.

'My invention has relation to molds for easting'metals; and it consistsin the improved construction and combination of parts constituting thesame, as will be hereinafter fully set forth.

The object of my invention is to produce a pulley, wheel, or likearticle in a manner such that said articles will be so perfect as not toSerial No. 211,203. (No model.)

sents the bed-plate of the rim-mold, which is supported upon legs andprovided with projections B, for retaining in place the casing O,mounted upon said plate. I) represents a pedestal arising from themiddle of a central depression in said plate; E, the upper and lowerbrace-rings; F, the upper and lower half of the wedge-links which formthe upper and lower link-sections; G, chains which pass through eyes H,formed upon each half of the wedge-links I, the double wedges J, theclamping-rods; K, the chain-tightening rods, and L the detachable gate.

The casing O is formed of two double-flanged rings, one fitted upon theother by means of a rabbet-joint, and both held together by ordinaryglands. Onthe inside'of the casing at both ends are formed beads LI,which make walls for the edges of the rim, and against which the innerparts of the mold rest.

The pedestal Dhas an encirclingflange near its upper end, which has anupwardly-projecting rim at its edge. In this rim are formed notches forreceiving the ends of the spokes, which bear against the sand core Mupon said pedestal. Each brace-ring is formed of aplate having acircular aperture in the center and a scalloped periphery. The extremityof each scallop-arc is joined to its neighbor by a short are, whosecenter of curvature is the center of the ring. On one face of said ringsand interior to each short are arises a pair of pyramidal points, N;

The wedge-links, Fig. 5, are each formed of two parts, which areremovably joined together by steady-pins O. In the j oining faces ofthese parts are formed transverse semi-cylindrical grooves Q. Saidgrooves terminate at their outer ends in countersinks, which allow themolten metal in molding the rim to form a securer about the ends of saidspokes. The

inner face of each part of the wedge-links is provided with a Y-shapedlug, one prong, R, of which is horizontally reduced from both upper andunder sides, and provided with an oblong vertical perforation. Theotherprong, S, isformed with a central horizontal recess for thereception of the reduced prong of an adjaoentlink. The parts of saidwedge-links are then hinged together by passing a pin through the prongsS and the perforations of the prongs R, thus forming the upper andlowerlinked sections. In the angle of each Y-shaped lug is formed one of theeyes H, through which the tightening-chains G are passed.

Each clamping'rod, Fig. 6, is a rod provided with a handle at its upperend, a projection at its lower end, and with an intermediate lippedprojection. To each clamp is attached a wedge, T, with a roughened upperedge, which assists in operating the clamp.

Each chain-tightening rod, Fig. 7, has a a handle formed at one end anda web, U, ex-

tending down the middle of one side. This web is wedge-shaped at itslower end,'and also near its upper end, the lower wedge portion to actupon the lower chain and the upper one on the upper chain. To eachtightening-rod is attached a wedge, V, for assisting the tightening-rodin performing its function.

The gate, Fig. 8, is of an oblong funnel shape, having alaterally-projecting recessed lug at its base and a key,'W, attachedthereto for securing said gate to a perforated stud, X, upon the top ofa wedge-link. One or more gates may be used, there being a cut-away inthe upper head of the casing at each of the wedge-links, to which a gateis secured.

In setting up the rim-mold, the lower basering is placed on thebed-plate with the pyramidal projections upward, the lower linkedsection placed about the pedestal, the wedgelinks resting in thescallops of said ring, the lower half of the casing slipped upon thebedplate, the spokes placed with one end in the notches of thepedestal-rim and the other in the grooves of the wedge-links, the upperlinksection placed upon the lower one, the steadypins assisting to holdit in place, the upper half of the casing slipped upon the lower 'halfand clamped to it by ordinary glands, the double wedges I put in placebetween the wedge-links, their lower wedgefaces resting against thepyramidal projections upon the lower Dracering, the upper brace-ring'putin place with its pyramidal points downward and resting against theupper wedge-faces of the double wedges, the clamping-rods applied bypassing them down through the apertures of the brace-rings, the lowerends extending into the central depression of the bed-plate, thusallowing the lower projections of said rods to engage the under side ofthe lower brace-ring and the lipped projection to engage the upper sideof the upper brace-ring, and their respective wedges driven under saidlipped projections,

thereby drawing said brace-rings toward each a other and forcing thedouble wedges out against the edges of the double wedges. Then the gatesare keyed in position, and the mold is ready for heating. There is agroove, Y, running horizontally around the middle of the united doublewedges and the wedge-links, intersecting the countersinks at the ends ofthe spokegrooves and providing for the formation of a rib along theinner-middle line of the rim.

Instead of the chains and their tighteningrods, spiral springs may beused by connecting them to the eyes H and to the pedestal, as seen at Z,Fig. 1.

After the mold has been heated to the desired degree the molten metal ispoured in. Immediately upon the solidifying of the metal themold iscollapsed to prevent scoring. This is done by removing the wedges fromthe clamp ing-rods and pushing the latter toward the center of thebrace-rings,which act releases the latter and removes the strain uponthe several inner parts of the mold and from the chains or springs,causing instant collapsing of the mold. Then upon the cooling of the rimit is taken from this mold and, with its attached spokes, transferred tothe hub-mold.

The hub-mold consists of a three-armed bedplate, A, supported upon legsand provided at its center with an aperture for receiving one end of aremovable replaceable trestle, B. At the end of each radiating arm is ascrew and hand-wheel, 0, supported in an upwardly-extending projection.

The trestle has a reduced portion at its lower end, by which it isretained in place in the center of the bed-plate. It also has a socketin the center of its upper face, into which fits a tenon on the lowerend of the hub-mold proper. The trestle is made removable that it may bereplaced by those of different sizes to suit dif' ferent widths of rimsor different lengths of hubs for rims of equal width.

The hub-mold proper consists of a hub shaped casing divided horizontallyinto two parts, D, provided with lateral ears near the line of division,which are provided with steady-pins, and upon which the glands may beclamped. The uniting faces of each part are provided withsemi-cylindrical grooves E, having countersinks at their inner ends forthe reception of the inner ends of the spokes. In the center of theupper and lower inner faces of the mold are formed sockets, into whichfit the ends of the sand core F.

' The gate for this mold is formed by making a perforation near the edgeof the top, removing one side of said perforation for a distance fromthe top and dovetailing a piece,

IIO

G, to fit removably i'n'its place. This piece is held in place by meansofthe hook H and wedge I.

In setting up this mold the rim, with its castin spokes, is placed uponthe bed-plate, the spokes resting in the semi-cylindrical grooves of thelower portion of the mold, the hand- Wheels turned up till the center ofthe rim coincides with the mold, the upper half of the mold adjusted,and the gate secured.

Then, after the mold has been heated, the pouring done, and the metalcooled, the re movable side of the gate is taken out and the gea-teasily broken off by striking it toward the removed side of the gate.

In the upper part of the hub-mold isformed the usual vent, J butin therim-mold the vents are formed by filing vertical creases K in the upperhead of the casing. J

By casting a wheel or pulley in the abovedescribed manner the spokes arefree at the inner ends during the contracting of the rim, the sand coreM giving way to any pressure, and therefore cannot cause injury to therim nor to themselves; and as no injury can be done to'any part of thewheel or pulley by the contraction of the hub a true and sound wheel orpulley is formed.

Having thus fully described my invention, I claim- 1. In ametallic mold,the combination ofthe casing of two parts uniting by rabbet-joint andprovided with a bead at each end of the inner face, the bed-plate withside projections, linked sections, double wedges, and brace-rings, asset forth.

2. The combination of the bed-plate, casing C O, brace-rings, doublewedges, linked sections, and clamping-rods J, as shown and de-. scribed.

3. The combination of a bed-plate provided with a central depression,casing G (J, bracerings, linked sections, double wedges, andclamping-rods, for the purpose set forth.

4. The combination, with a bed-plate, casing, linked sections, anddouble wedges, of brace-rings consisting of a plate formed with acentral aperture, a scalloped periphery, and having upon one face a pairof pyramidal projections at each scallop-point, as shown and described.

5. The combination, with a bed-plate, casing, link ed sections, doublewedges, and bracerings, of a rough-edged wedge and a clampingrod formedwith a handle at one end, a projection at the other, and an intermediatelipped projection, as shown and described.

6. In a metallic mold, the combination, with a casing, a chain, andlinked sections, of a wedge and a tightening-rod formed with a handle atone end and a double wedge-shaped web extending down the middle of oneside, as

and brace-rings, of a linked section consisting of wedge-links formedwith a Y-shaped lug upon their inner faces, one prong of which isreduced and provided with an oblong perforation, the other prongcentrally recessed, said links being united by a pin passed through thecentrally-recessed prong and the perforation in the reduced prong of anadjacent link, as shown and described.

8. In a metallic mold, the combination of a bed-plate,a casing,linkedsections consisting of wedge-links, each provided with an eye upon itsinner face, a chain passing through said eyes, double wedges,brace-rings, clampingrods, and chain-tightening rods, as set forth.

9. The combination of a bed-plate provided with a central pedestalhaving a notched rim about it near its upper end, a casing, linkedsections detachably united by steady-pins and provided on their unitingends with semi-cy lindrical grooves terminating at their outer ends incountersinks, double wedges, brace- .rings, and clamping-rods, as shownand described.

10. The combination, with the within-described metallic rim-mold, inwhich the bead on the upper end of the inner face of the easing isrecessed at intervals, of an oblong funnel-shaped gate provided with alateral recessed projection at its base and a key attached thereto forsecuring the same upon a perforated stud projecting from the upper endof a wedgelink, as shown and described.

11. The combination,with ahub-mold, of the within-described metallicrim-mold, consisting .of bed-plate, casing, pedestal, linked sections,

tenon, and a bed-plate with a central opening I adapted to receive thelower end of said trestle, as set forth.

14. The within-described hubmold, consisting of two parts formed andunited at their meeting edges substantially as specified, and the upperportion provided with aperforation, one side of which is removed for adistance from the top of the mold, and a dovetailed piece correspondingin size to the removed portion fitted removably in the place thereof,sub stantially as and for the purpose set forth.

15. The within-described gate for metallic molds, consisting in thecombination of a removable dovetailed piece shaped to form a portion ofone side of the inlet, a hook, and a in testimonythatI claim theforegoingas my [0 wedge for retaining said piece in place, as own I havehereunto aifixed my signature in shown and described. presence of twowitnesses.

16. The combination of a rim-mold with the Within-described hub-mold,consisting of JAMES WILSON MCGILL.

a three-armed bed-plate, screws, and handwheels, trestle, hub-moldpropel, and its gate \Vitnesses:

with detachableside, hook, and wedge, as and WILLIAM HENERY GRAY, forthe purpose set forth. 1 CLARE SANFORD J AOKSON.

